Dental anvil or swage-block.



" Taazzwh amt m one form of anvil body. Figs. .4, 5 and 6 are-transversesections of other forms or invention consist arrangement 20f th provide,incombination W1 5 min rt, oEHLEn; or'oHIcAGo, ILLINOIS.

Be it known-that IQLo" Is] cle ner the UnitedlfStates, and a" resident 1of Chicago; in the County of Cook and State of Illinois, have l inveiited certain. new and Yu's'e'ful Improvements IinIDent'alj Anvils orSwage-Blocks; and I do hereby declare that the following ijsja fullglclear, and exact de scription thereofreference being liad to the aqe my t dewmgwpd o the a -J acters h of reference marked "{thereon; whichThis invention relates to improvements in. dental anvils swage blocks,and the forth and. more p i Among the; objects of the invention isj toprovide a swa'geblookor anvil composed'of a relatively soft anvilfzbodyand a rigid sustaining frame, of a construction to. per; mit theanviljbody to be quickly andre'a'dily" removed from fand applied to theframe for the purpose of renewal. J H

jA frtherobject of the invention; is to t s nm means to support thefra'jme'to permit the anvil body to be readily. driven from the frame.""t y I n As shown in the drawings :Figure""lfis' a plan View of a dentalanvil orswage block I embodying my invention. Fig. 2 is a trans 'versesection thereof, a showing it inverted over a supporting ring on whichit is sustained when the anvil body is to be removed from the frame.Fig. 3 is a side elevation of modifications; the latter showing amodified form of supporting ring for the anvil frame. Fig. 7 is atransverse section, partially broken away, of:a further modification.

An anvil or swage block embodying my invention comprises 1a frame havinga through openingconstitutingva chamber or recess. to receive a softmetal anvil body and provided at one side with a surface or shoulderover which a portion of the "anvil body is up-set to constitute .alocking engagement .between the frame and the anvil body of such nature,however, as toipermit the anvil body to be driven or forced from theframe for the purpose of renewing the anvil body.

0 As shown in Figs. 1 to6, inclusive, of the drawings, 10 designatesjacast metal frame the combination and arts hereinafter; set" tarticularlypointedout in the appended claims.

DENTA Anvil. on swAGn-3Loo lstg ieeatitaer Lettasrateiit raised marginalflange-'11 "to provide Within the flange -a ,depression' or recess toreceive a body 12 of "relatively;soft materia'Lsuch as lead,"Babbittjortheiike, the outer face 14: offw ich'constitutes theanvilfface of the block"; The said'fianges 1'1 laterally supportsthetrelatively soft anvil body 12 so 'as to revails lateraldisplacement of-the same underhamn er blows.-- As shown in FigsfiZ,

345",5" and 16'," the frame .10 is provided ,c'enftrally with an opening15, and the "anvil body12 is provided aninternal'lug 16 xvvhich'fisadapted to extend into said open bodyio. As shown Figs." 3, *5 6; thelower end of the i'opening 15 is beveled or countersunk at 17 toform"'a" tapered shoulder 'against'wli'ich'fthe end of the lugv is up:

set to constitutel'interlocking.connection betweensaid 'partsff my Fig;4-the shoulder or surface against which the anvil body or an" extensionthereof is upset has the form of along taper ex-' tending from endto'endof the opening 15. Inv R g s, the central opening I 15; is formedwith straightwalls, and the interlocking shoulder or surface on theframe and. anvil body are formed at the'*bottom side offlthe "frame! IWhen the anvil body is-to be renewed, the

said body may be removed from-the frame by pressure or blows applied tothe extension or lug 16 through the medium of asuitable I punch. Inorder that the anvil body may readily freeitself from the frame the Wallof the opening 15 and the inner sides of the flange'll may be taperedwith an upwardly flaring effect.

To facilitate the removal of the anvil body, the said frame may beprovided with a flange 20 which is adapted to rest on the upper end of ahollow support 21, into which.

the flange, 11 extends, so "as to support the anvil frame a distanceabove the surface onwhich the frame 21 rests, and to thereby enable theanvil body to clear itself of the anvil frame when said body is forcedaway therefrom.

In lieu of the arrangement shown in Fig 2, I may provide thesupport 23 I(Fig. 6) with an interior annular shoulder 24 upon which the frameflange 11 is directly sup ported whenthe frame is mounted and in Iposition to force the anvil body therefrom.

In Fig. 7 the anvil frame 27 has the form of a short section of atube orring, and is provided at one end witha shoulder or surface 28 outwardlyagainst the adjaeent end of the anvil body 29 is upset to form aninterlocking connection ibetweenthe anvil body I and the frame. .In thisconstruction, by neason of carrying the full diameter of the anvil'ibody from one side to v the otherf of the ring, like fra1ne,-b 0 th faees of the anvillbodyinay. be utilized. When the'a'n'ivjil body is rtobe replaced, thesaid ring like frame maybe placed upon a supportingframe,siichasis;

shown in Fig. '6, and th'ebo'dy"driven ldownfl wardly or outwardlyawayfiQin the frame Insaid latter construction, the innerfside I of thering like frame may befroughenedf as shown at 80, so as topreventshiftingbf? vi y la-tivelyto s ameles the olfdinmyiuse ofedevicefl.

The construction shown permits the anvil a body, of whichever type.illustrated to: be

relatively soft material supported by the walls ofthe frame, and means,for providing an interlocking connection betweenf-the franaeandbody,constructed to permit said;

*- the body to? said frame.

tends into saidfo "end over said shoulder; 1 1

end f v body to be -drive n out of the lirame, said fliLlIlBjibeingqprovided at one side of its opening with an annular surface orshoulder outwardly over 'v vhich an adjacent annular part of the anvilbody. is up-set to interlock provided with alug l or extension which,ex-

, I comprising a. .frame formed atone'side with a recess, a renewableanvil body of relatively soft material in said "recessflsaid' being"-pro-- vided with "a f centralbpening having at one end anannularshoulderand the body being a An anvil -or gwa eibiqek e'bmprismgy a?receive an anvil body, andprovided also with a a central pe ing 1extends to the s Of the anie r not fi m. sel re ess and a rene b -e v dy'Q relative y. S

flaringsurface outwardly over as my invention Iv afiiz; f i 'y"signature in: the

gframe formed atone with 'a recess to material, occupying rece'ssfaiidprovided with a which enters'sjaid opening 'the i l of h op n b ng? f dWith 1&1? annular presence of two witnesses, this of gDeeernber; i I iou s, ,F noEHnE-Rj NVitnesses: a H

I copiesiof tliis patent niayibe obtained {on five cents each, byaddressing the Goinmi s sioner flame Washington, no.3 i

